Machine for rolling car-wheels.



PATENTED JUNE 13, 1905.

H. V. LOSS.

MACHINE FOR ROLLING GAR WHEELS.

APPLICATION FILED DEC. 21, 1904.

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INVENTOR G WIIIIT'WW M NW WITNESSES:

PATENTBD JUNE 13, 1905. H. V. LOSS. MACHINE FOR ROLLING CAB. WHEELS.

APPLIOATION FILED DEC. 21, 1904. M

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WI T.\'ESSES Nrren STATES Patented June 13, 1905.

HENRIK V. LOSS, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO CHAS. T.SCHOEN, OF MOYLAN, PENNSYLVANIA.

MACHINE FOR ROLLING CAR-WHEELS.

SPECIFICATION forming part of Letters Patent No. 792,337, dated June 13,1905.

Application filed December 21, 1904. Serial No.

To mil whom it may concern.-

Be it known that I, HENRIK V. Loss, a citizen of the United States, anda resident of the city and county of Philad elphia, State ofPennsylvania, have invented certain new and useful Improvements inMachines for Rolling Car- IVheels, of which the following is aspecification.

My invention relates to improvements in machines for rolling car-wheels;and the object of my invention is to furnish an improved means forforming the tread and an improved means for supporting the blank duringthe process of rolling.

In Letters Patent of the United States granted to me on August 12,1902,No. 7 06,67 4, a machine for rolling car-wheels is shown in whichthe blank to be formed into the wheel is made with a central perforationthrough which a horizontal spindle passes in order to support itvertically, the blank being operated upon by three sets ofindependently-controllable rolls, one set for drawing out the web,another for forming the tread, and the third for acting upon the lateraledges of tread. In this invention the rolls for forming the tread aremovable toward the center of the blank during the rolling, while theweb-forming rolls are movable during the rolling substantially towardone anotherthat is to say, against the sides of the blank. In practicethis method of rolling the wheel-blank has proved fairly satisfactory,except in that the extreme pressures necessary to form the wheel drawthe metal away from the supportingspindle, causing the inner parts ofthe sides of the perforation through the blank to be drawn outward, thusleaving a perforation of greater diameter inside than at its ends, andsubsequently necessitating the removal by boring or otherwise of aconsiderable amount of metal from the hub in order to obtain aperforation of uniform diameter throughout.

In my present invention I use a blank which is formed with depressionsat its center, one upon either side, leaving a web of metal between, andI engage these depressions and support the blank during the process ofrolling upon trunnions suitably carried in a frame.

The Web of metal separating the depressions upon the opposite ends ofthe hub serves to tie opposite sides of the hub together and preventsany serious distortion of the central portion of the hub during therolling process. After the wheel has been completed its hub is bored,and this one boring is all that is required. The web of the wheel isformed, as in my former invention, between complemental rolls; but theserolls in addition to having their former movement of rotation andmovement toward and away from one another and from the web haveconjointly a movement substantially at right angles to the transverseaxis of the wheel, While the wheel which forms the outer face of thetread has no movement other than that on its aXis.

In the accompanying drawings, forming part of this specification, Figure1 is a plan, partly in section, of my improved rolling-machine, theupper plate a, Fig. 3, being removed; Fig. 2, a section, on an enlargedscale, of Fig. 1 on line A A; Fig. 3, an end view of the convergingroll-holders and their connection-yoke, and Fig. 4 a section of Fig. 2on line B B.

1, Figs. 1 and 8, is a bed-plate, and a, Fig.

3, a top plate, which carry stands 2, which carry trunnions 3, Figs. 2and i, which engage depressions 4, formed at the center and uponopposite sides of the blank 6. The complemental rolls 7 are arranged, asbefore, convergently in rotary roll-holders 8, which are mounted inbearings 10, which are now secured together by any suitable yoke 9. Theroll-holders 8 have rotary motion imparted to them through thecoupling-rods 11, which are arranged and driven in any suitable mannerasin my former patent, for instance. It will therefore be unnecessary toredescribe this part of the machine. The forward end of each roll-holder8 is mounted in a block 23, which is movable in ways 24 on the bedplate1 through mechanism as described in my former patent to cause the rolls7 to approach or recede from the work, and the bearings 10, in additionto their former movement upon their vertical axis, so that the rolls maybe moved toward and away from the Work,

have a longitudinal movement in ways 12, carried by the bed 1 and platea, so that the rolls 7 may be moved toward or away from thetread-shaping roll 41, which is carried in the present case in fixedbearings 42, which are carried by bed 1.

The bearings 10, which carry the roll-holders 8, are cast together orare secured by a yoke 9, and this yoke and the bearings 10, with whichit is connected, the roll-holders 8, and the rolls 7 are adjustabletoward and away from the tread-shaping roll 41 by a Screw 4A, mounted inbearings 45 and having a nut 46, which carries a wormwheel 47, whichengages a worm 48 on a shaft 49. By revolving the shaft 4:9 in anyconvenient manner the worm 48, worm-wheel 4:7, and nut 46 may be drivento move the screw 44 and the rolls 7 toward or away from thetread-forming roll 41.

The wheel-blank 6 is first roughly "forged to shape in a press, and uponeach side the hub is formed a depression 4. (Best shown in Figs. 2 andat.) 50 is a web separating the depressions I, which preferably haveinwardly-sloping walls. 3 represents trunnions adapted to engage thedepressions 4 to support the blank during the finishing operations. Thetrunnions 3 are carried on spindles 51, which are carried in bearings52, which are carried and revolve in blocks 53, which are movablycarried in the stands 2. The stands 2 are furnished with longitudinalguides 7) and with transverse guides c, in which the blocks 53 canslide. When the blank 6 is to be secured to or detached from thetrunnions 3, the blocks 53 are moved to the outer end of the stands 2,in which position they can be moved out in the guides c to cause thetrunnions 3 to disengage the blank 6. \Vhen the blocks 52 are moved inon guides c, the trunnions engage the blank, as shown, and the blockscan then be moved in on guides 7) until the web of the blank is inposition to be engaged by rolls 7. During the rolling by the.rolls 7 thediameter of the blank is increased and causes the trunnions 3 andconnected parts to slide outward in guides Z a movement which they arefree to make. After the completion of the rolling the blocks 53 aremoved out on slides Z) until the hooks (Z, Fig. 4, on the inner ends ofrods 59 engage collars 61, carried by blocks 53. The rods 59 are pivotedto levers 54c 55 at 60, and these levers are themselves pivoted (theformer at 56, the latter at 57) to stationary supports. 58 is a rodconnecting levers 54 55; 62, a counterweight upon upper end of lever 54.By throwing the lever 54: outward when the blocks 53 are opposite guidesc the trunnions 3 are, through the connections shown, simultaneouslydrawn out of the depressions a in the blank 6, and, conversely, if thelever 55 be thrown inward the trunnions 3 are simultaneously throwninward to engage the depressions at in a blank which has veass'r beenmoved in any convenient manner opposite them. The complcmental rolls 7having been separated, as in my former invention, and the blank 6 beingheld by the trunnions 3, the rolls 7 are closed and revolved, and at thesame time they are, through the screw 44 or an equivalent device, movedout toward the tread-forming wheel 41, simultaneously rolling the web ofthe blank and, in conjunction with the wheel 4L1, forming the tread. Theweb of metal 50, separating the depressions 4 in the wheel-blank 6,prevents any serious distortion of the hub of the blank during therolling, the hub being finally punched or bored for the axle after thewheel has been otherwise completely formed.

Having thus described my invention, I claim as new and desire to secureby Letters Paten t-* 1. In a machine for rolling car-wheels, incombination, means for rcvolubly carrying the wheel-blank, a tread-roll,a pair of converging rolls adapted to shape the wheel between its huband tread and in conjunction with said tread-roll to form the tread,means for moving said converging rolls into and out of operativeposition with the web, means for driving said latter rolls, and meansfor moving said latter rolls in and out, substantially at right anglesto the axis of the tread-roll.

2. In a machine for rolling car-wheels, in combination, means forrevolubly carrying the wheel-blank, a tread-roll, fixed supports forcarrying said roll, a pair of converging rolls adapted to shape the webof the wheel and in conjunction with said tread-roll to form the tread,means for moving said converging rolls into and out of operativeposition with the web, means for moving said rolls toward and away fromthe tread-roll, that is, substantially at right angles to the axis ofsaid roll, and means for driving said rolls.

3. In a machine for rolling car-wheels, in combination, means forrevolubly carrying the wheel-blank, a tread-roll, fixed supports forcarrying said roll, a pair of converging rolls adapted to shape the webof the wheel and in conjunction with said tread-roll to term the tread,a carriage for carrying said converging rolls, means for moving saidrolls substantially longitudinally, means for moving said rollssubstantially radially, and means for driving said rolls.

4. In a machine for rolling car-wheels, in combination, a pair ofconverging rolls adapted to roll the web and the inner side of the rimof the wheel, means for positively rotating each of said convergingrolls, bearings in which said rolls are carried, a yoke carrying saidbearings, guides for said bearings, a screw engaging said yoke, andmeans whereby said screw may be rotated in order to advance or retractsaid yoke, bearings, and rolls.

5. In a wheel-rolling machine, in combinanished with longitudinal andtransverse guides, blocks carried by said guides, trunnions carried bysaid blocks adapted to engage a wheel-blank centrally, hooked rodsadapted 5 to engage said blocks when opposite said transverse guides,pivoted levers to which the outer ends of said rods are connected, and aconnection between said levers whereby the operation of one will causethe proper opera- 1 tion of the other.

6. In combination, supports or carriers between which a blank is adaptedto be placed, blocks adapted to slide longitudinally and transversely insaid carriers, bearings adapted to rotate in said blocks, trunnionscarried by 5 said bearings, and means whereby said blocks may be movedtransversely in the said bear 1ngs.

HENRIK V. LOSS. Witnesses:

GEORGE W. SELTZER, GnARLns A. BUTTER.

